Ladislav Žák (25 June 1900 – 26 May 1973 in Prague) was a Czech architect, painter, architectural theorist and teacher.

He then began the study of painting at the Academy of Fine Arts in the studio of Professor Karl Krattner.

Also in 1927, Žák wrote his first theoretical essay, O syntézu kreslení dneška (On the Synthesis of Drawing Today).

He was intimidated by articles published in the specialized magazines, but thanks to an intercession by his colleague Jaroslav Fragner, Žák was allowed to continue teaching at the Academy of Fine Arts.

He summarized his research and insights in his main theoretical work, Obytná krajina ("The Inhabited Landscape"), which was published in 1947.